local table_name = "weapon"
local old_table = IMPORT_D:get_table(table_name)
if not old_table then
    return
end

local BigNum = require "BigNum"

local new_table = table.copy(old_table)
for _, tbl in pairs(new_table) do
    tbl.coinPurchase = BigNum.new(tbl.coinPurchase)
end

IMPORT_D:set(table_name, new_table)
